Video transcript

1. 00:00Intro

   Nothing notifies you when a list adds you. So here's how to check a domain, then a single IP, for free. This is the free Email Blacklist Checker, and it needs no signup. It asks four public blocklists about your domain or your IP. Those four are SpamCop, Barracuda, PSBL and UCEPROTECT Level 1. It's a lookup, not an opinion. It reads the same source a receiving mail server reads before it accepts your message. Enter your domain, and click Check Blacklists.

2. 00:32Read the result

   Four rows come back, and each one says Clean. The badge at the top says All clean. Look at the top line. The domain resolved to one IP address, and that's what was checked. It may not be the server that sends your mail. The second tool covers that. Each row names its list, because lists don't all carry the same weight. Read the source before you panic. If a row ever shows a listing, find the cause first. Ask for removal too early, and you can end up listed again. A clean result rules out one class of problem. If mail still lands in spam, move on to SPF, DKIM, DMARC and complaint rates.

3. 01:07Check an IP

   Now the IP Reputation Checker. It takes one IPv4 address, so start from the address that actually connected to receivers. You can find it in your Received headers, or in what your email provider assigned you. This demo uses a public IP, 9.9.9.9, and runs the check.

4. 01:24Read the IP result

   You get two things. First, the PTR record, the hostname published for this IP. Here it's dns9.quad9.net. A missing PTR can mean the mail server setup isn't finished. A present one doesn't prove the sender is authorized. Second, the same four lists, checked against this exact address. All clean again. There's no single reputation score here, because no universal score exists. And no free tool can see the private scores at Gmail, Microsoft or Yahoo. Run both before every major campaign, and after any unexplained drop in delivery.

5. 01:58Get started free

   20 free credits every day you use your account, up to 600 a month. No credit card required. Start at billionverify.com.

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